Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 49, NWS Jackson, MS

March 29, 2011Scott County, Mississippi

NWS Jackson, MS issued this flash flood warning at Mar 29, 2011, 11:54 PM CDT for Scott County, Mississippi. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 29, 2011, 11:54 PM CDT (04:54 UTC)
Expired: Mar 30, 2011, 3:00 AM CDT
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

County Scott County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 40 km from the middle of the area, began a volume at 04:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Mar 30, 12:30 AM CDT	FLASH FLOOD	Morton, MS	SUBSTANTIAL FLOODING CONTINUED AROUND MORTON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.9 hours before the alert went out and 49 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 780 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

403 
WGUS54 KJAN 300454
FFWJAN
MSC123-300800-
/O.NEW.KJAN.FF.W.0049.110330T0454Z-110330T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1154 PM CDT TUE MAR 29 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN SCOTT COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...MORTON...FOREST...

* UNTIL 300 AM CDT

* AT 1153 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS CONTINUE TO 
REPORT FLOODING ACROSS MORTON AND PORTIONS OF WESTERN SCOTT COUNTY. 
NEW THUNDERSTORM ACTIVITY...PRODUCING PRODUCING HEAVY RAIN NEAR 
MORTON IS MOVING EAST AT 45 MPH. ESTIMATED RADAR RAINFALL 
AMOUNTS...ON THE ORDER OF TWO TO FOUR INCHES...HAVE OCCURRED IN THE 
PAST THREE HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HOMEWOOD AND HILLSBORO

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE TO THREE INCHES POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3242 8972 3249 8933 3224 8934 3224 8972

$$

CME

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 29, 7:00 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	60 min
Mar 29, 7:18 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Washington	57 min
Mar 29, 7:22 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	53 min
Mar 29, 7:58 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Hinds, Warren	62 min
Mar 29, 8:00 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Simpson	45 min
Mar 29, 8:16 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott	44 min
Mar 29, 8:27 PM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	63 min
Mar 29, 8:31 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Newton	59 min
Mar 29, 8:46 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Madison, Rankin, Simpson	74 min
Mar 29, 8:49 PM CDT	Flash Flood Warning	JAN	Hinds, Rankin	116 min
Mar 29, 9:01 PM CDT	Special Weather Statement	JAN	Carroll	29 min
Mar 29, 9:14 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore	61 min
Mar 29, 9:31 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	44 min
Mar 29, 9:41 PM CDT	Tornado Warning	JAN	Simpson	30 min
Mar 29, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	60 min
Mar 29, 9:55 PM CDT	Flash Flood Warning	JAN	Scott	2 hr
Mar 29, 9:58 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	17 min
Mar 29, 10:09 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	21 min
Mar 29, 10:23 PM CDT	Flash Flood Warning	JAN	Claiborne, Warren	2 hr
Mar 29, 10:39 PM CDT	Flash Flood Warning	JAN	Hinds, Rankin	3 hr
Mar 29, 11:45 PM CDT	Flash Flood Warning	JAN	Copiah, Simpson	2 hr
Mar 30, 12:39 AM CDT	Severe Thunderstorm Warning	JAN	Warren	56 min
Mar 30, 1:01 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	15 min
Mar 30, 1:16 AM CDT	Special Weather Statement	JAN	Jefferson Davis, Lawrence	29 min
Mar 30, 1:29 AM CDT	Special Weather Statement	JAN	Covington, Jefferson Davis	31 min
Mar 30, 1:31 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Issaquena, Madison, Sharkey, Warren, Yazoo	22 min
Mar 30, 2:00 AM CDT	Special Weather Statement	JAN	Covington, Jefferson Davis	40 min
Mar 30, 3:15 AM CDT	Special Weather Statement	JAN	Forrest	20 min
Mar 30, 4:34 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	29 min
Mar 30, 4:41 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	23 min
Mar 30, 6:25 AM CDT	Special Weather Statement	JAN	Madison	30 min
Mar 30, 6:48 AM CDT	Special Weather Statement	JAN	Madison	32 min
Mar 30, 6:54 AM CDT	Special Weather Statement	JAN	Marion	31 min

Nearby

Flash Flood Warnings in Mississippi, 2011 Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.